AP Biologyeasymcq1 pt
As a spherical cell doubles in radius, its surface area-to-volume ratio
A.decreases
B.doubles
C.stays the same
D.increases
Explanation
Core Concept
Surface area scales with r² and volume with r³, so SA:V falls as radius grows. Bigger cells exchange less efficiently per unit volume.
Correct Answer
Adecreases
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